public class StoreAreas {

    private final ApexPages.standardController controller;
    
    public StoreAreas(ApexPages.StandardController controller) {
        this.controller = controller;
        
    }
    
    public List<Area__c> getAreas{
        get {
            if(getAreas == null){
                this.getAreas = [SELECT Id, Name FROM Area__c];
            }
            return getAreas;
        }
        set;
    }
}